How to increase quant accuracy?

While I do have a background in Maths, when I attempt the foundational quizzes, I am noticing I end up making mistakes. I scored 23/25 on the arthimetic one and 16/19 on the algebra one. I believe, I can lazily classify them as “silly errors” but I believe I am falling for the traps in GRE. How should I study to increase my accuracy?

It’s a hard post to respond to for me since you make no effort at a plan for me to comment on.

What is your best effort at a solution to this?